Duplicating machine



Sept. 22, 1931. R. PHIBBS 1,823,952

DUPLICATING MACHINE Original Filed June 27. 1950 3 Sheets-Sheet. 1

ATTORNEY Sept. 22, 1931. R. P. PHIBBS DUPLICATING MACHINE Original FiledJune 27, 1930 s Sheets-Sheet. 2

Sept. 22, 1931. R. P, PHIB'BS 1,823,952

DUPLICA'PING MACHINE Original Filed June 27, 1930 s Sheets-Sheet sATTORN EY Patented Sept. 22, 1931 err STATES RICHARD P; PHIBBS, OF SOUTHAMBOY', NEW JERSEY nurLrcA'r ne MACHINE,

Application filed June 27, 1930, Serial This invention relates toduplicating machines of the type wherein a gelatinous sheet is employed,and more particularly to 2 Also, the copying paper has a tendency tostick to the gelatinous sheet, and after the copy has been made,difliculty is experienced in removing the paper from the sheet.

It is an object of this invention to provide a duplicating machine inwhich means are provided for taking up the slack in'the gelatinoussheet, and preventing slipping thereof.

riage for making copies from the gelatinous sheet, which carriageisprovided with means for stripping the paperfrom the sheet.

A further object is the provision of a duplicating machine in which agelatinousreproducing sheet is mounted so that ithas only line contactwith the paper upon, which the copy is being made.

These and other advantageous objects, which will later appear, areaccomplished by the simple and practical construction and arrangement ofparts hereinafter described, and exhibited in the accompanying drawings,forming part hereof, and in which:

Figure 1 represents a plan view .of the machine.

Figure 2 represents a side elevation of the machine.

Figure 3 represents a sectional side elevation of the machine showinginterior details, taken on line 3--3 of Figure 1.

Figure 4 represents an end view of the 50 machine. 7 t

A further object is the provision of a carno. 454,234. Renewed April 22,1931.

Figure 5 represents a sectional view taken on line 55 of Figure 2, and lI Figure 6 represents a sectional view taken on line 6-6 of Figure 2.

Referring to the drawings, the machine is 5 shown to include a casinghaving side walls 7, the upper corners of each wall having attachedthereto lugs 8 which support the parallel guide rods 9. The side walls 7are braced at each end by transverse rods 10.

Encircling'the rods 9 are apertured ears 11, integral with the sidemembers 12 of a carriage, the side members 12 being bracedby rods 13.and 15, the'rod 15 having pivotally 'mountedthereon the side members 1 105 r of a frame upon which is mounted a paper chute 16. r vLateralprojections 17 from the side members 14 engage the earsll tolimit the downward movement of the frame. The free 7 ends of thesidemembers 1 1 are braced by a rod 18 upon which is pivotally mounted asmall frame having sides'19 and a cross. bar. 21, upon which issupported a handle i he sides '19 support a shaft 22 upon which isrotatably mountedv an impression roller 23, which cooperates with asimilar roller 25 mounted on a shaft 24, thelatter being supported bythe sidemembers 12.-

Supported by the side members 14, forwardly of the rollers, is a paperstripping knife 26, positioned so that its upper surface is tangent tothe roller 25.

A gelatinous sheet 27 passes between the 85. rollers 23 and 25, and iswound on rollers 28 and 29, rotatably mounted respectively inthe'bearings 31, 32 and 30. Bearings 30,

31 and 32 are provided with slots 33 and j 34:, through which pins 35may pass to the center of the bearings, the pins 35 being integral withthe fiat projections 35 on the rollers. As will be seen, the aboveconstruction renders the rollers interchangeable.

As will be seen from Figures 1, 4 and 5, the driving force is applied toroller 29, one of the projections 35 of which and'its accompanying pin35 fit into the slot 36 and recess .37, respectively, of a frictionclutch member 38, having a flange 39 for a purpose A crank arm 47 isattached to the shaft 43 by means ofa set screw 43. Obviously, when thecrank arm 47 is moved in the proper direction, the gelatinoiis sheet 27will be wound on roller 29 and unwound from roller 28. p r

A chain 49 is guided over the clutch meme ber 38 by the flange 39, thechain passing over a sprocket 73 fixed to the bearing 32-, which bearingis rotatably mounted on the wall 7. Pivotally mounted on the side. wall7 .at

50 is a rocker havin the arms 55 and'56. D

A similar rocker with arms 52. and 53 is pivoted at 51. The'ends of arms53 and 56 are'provided respectively with rollers 54 and 57, which engagethe chain 49 to take up the slack therein and tighten its grip on theclutch member 38. The ends 'ofarms 55and 52 are connected by tensionspring 58, which normally urge the rollers 54 and 57 to raised positionsfrom the chain 49.

A flange. 59 engages thelsides of the arn s 55 and 52, the flange 59being integral with an oval cam 60positioned between the arms to spreadthem apart, the cam being attached to a shaft 71, to which is fixed acrank 72,

the shaft 71 being journalled ina bearing mounted on the wall 7 o Fixedto shaft 71 is an arm 61, having pivotally connected thereto a link 62,provided with a slot 63, in which movesa pin 64-, the latter being fixedto an arm 65 which'is pivoted at 66 to the wall 7. The end of arm 65 isattached to one end of a tension spring 67, the other end of which isconnected to an'arm 63, pivoted at 69 to the wall 7 the free endof arm68 carr ing a flanged roller 70 which engages thechain 49. i V

In operation, when it is desired to present a fresh portion of thegelatinous sheet 27 the crank 72 is moved to place the cam 60 in theposition shown in Figure 3 in which the rollers 57 and 54 are releasedfrom'engagement with the chain 49.

The sheet 27 may now be wound upon roller 29 by means of crank 47 andthe friction clutch to present the fresh surface. The crank 72 is thenrotated to cause the cam 60 to spread the arms 55 and 52, to cause therollers 54 and 57 to grip the chain to take up the slack therein, andprevent movement of the roller 29 and resulting movement of the sheet27.

As the crank 72 is rotated the arm 61 moves the link 62 to cause thelower portion of the slot 43 to engage the pin 64 and move the arm 65upwardly against the action of spring 67, thus causing arm 68'to bepulled upwardly and the roller 70 to resiliently grip the chain tofurther prevent slack in the chain 49. The sheet 27 is now positivelyheld in fixed position, and there will be no slipping thereof during theoperation of the carriage. The roller 70 alsocompensates for change intension of the sheet 27 as the carriage is moved back and forth.

The matter to be duplicated is then impressed on the fresh gelatinoussurface with a reproducing ink, and a sheet ofrpaper S is inserted inthe carriage so that its forward edge is between the rollers 23 and 25,and resting on knife 26. As the handle 20 is pulled to the right, seeFigure 3, pressurefis applied to the rollers, paper and sheet 27, andmovement of the carriage to the right will progressively present a freshsurface of the sheet 27 into contact with a fresh portion of the paperS, there always being line contact.

As the carriage moves to the right, Figure 3, the paper is fed upon thesheet 27, and immediately stripped therefrom by the stripping knife 26.When the extreme right of the machine has been reached, the handle ispressed to the left, which movement releases the pressure of the roller23 on roller 25, at the same time moving the carriage back to theposition for making another copy.

As will be seen, the side .members 14 are pivoted on the rod 15, so thatthe handle 20 and roller 23 may be moved to an out-of-theway positionwhen desired to enable access conveniently to the gelatinous sheet 27.

lVhile the member 26 has been herein described as a knife, it is obviousthatother stripping means, such as wire, etc., may be used.

The foregoing disclosure is to be regarded as descriptive andillustrative only, and not as restrictive or limitative of the inventionof which obviously an embodiment may be constructed including manymodifications without departing from the general scope herein indicatedand denoted in the appended claims.

Having thus described my invention, what I claim as new and desire tersPatent, is:

1. In a duplicating machine, a gelatinous sheet, rollers at the ends ofthe machine over which the sheet may be wound, a horizontally slidablecarriage, and a roller on to secure by Leti the carriage over which thesheet passes, said sheet being always at an angle to the horizontal.

2. In a duplicating machine, a gelatinous sheet mounted so that it isalways at an angle to the horizontal, a horizontally slidable carriagn,a roller on the carriage over which the sheet passes, a frame pivoted.to

the carriage, and a roller carried by the frame, said rollers beingpositioned to cooperate to apply pressure to the sheet.

3. In a duplicating machine, a gelatinous sheet, a slidably mountedcarriage, a lower roller on the cariage over which the sheet passes, apaper guide chute pivotally mount ed on the carriage, a frame pivoted onthe guide chute, an upper roller carried by the frame and positionedimmediately above the lower roller, and a paper stripping knife fixed tothe guide chute sothat its upper edge is tangent to the lower roller.

4. In a duplicating machine, a gelatinous sheet, a slidably mountedcarriage, a lower roller on the carriage over which the sheet passes, apaper guide chute pivotally mounted on the carriage, a frame pivoted onthe guide chute, and an upper roller carried by the frame and positionedimmediately above the lower roller. v

5. In a duplicating machine, a gelatinous sheet mounted so that it isalways at an angle to the horizontal, a horizontally slidable carriage,a roller on the carriage over which the sheet passes, a frame pivoted tothe carriage, a roller carried by the frame, said rollers beingpositioned to cooperate to apply pressure to the sheet, and a paperstripping knife mounted on the carriage so that its upper edge istangent to the first mentioned roller.

' 6. In a duplicating machine, .a gelatinous sheet, a slidably mountedcarriage, a lower roller mounted on the carriage over which the sheetpasses, a frame pivoted on the carriage, and an upper roller carried bythe frame.

7 In a duplicating machine, a gelatinou sheet mounted so that it isalways at an angle to the horizontal, a horizontally slidable carriage,a roller on the carriage over which the sheet passes, a frame pivoted tothe carriage, a roller carried by the frame, said rollers beingpositioned to cooperate to apply pressure to the sheet-, and a paperstripping means mounted on the carriage adjacent the rollers so that itsupper edge is tangent to the first mentioned roller.

8. In a duplicating machine, a gelatinous sheet, means for supportingthe ends of the sheet, a slidable carriage, and a roller on the carriageover which the sheet passes,

said sheetbeing always at an angle to the line of travel of thecarriage.

9. In a duplicatingmachine, a gelatinous mounted carriage, a framepivoted on the carriage, a roller carried by the frame and engageablewith the gelatinous sheet, and a paper stripping knife mounted on thecarriage and having its edge adjacent the gelatinous sheet. p

10. In a duplicating machine, a gelatinous sheet, a support for thesheet, a slidably mounted carriage, a frame pivoted on the carriage, aroller carried by the frame and engageable with the gelatinous sheet,and paper stripping means mounted on the carriage adjacent thegelatinous'sheet.

11. In a duplicating machine, a gelatinous sheet, a slidaoly mountedcarriage, and a paper stripping knife mounted on the carriage and havingits edge adjacent the gelatinous sheet. 7 o I 12. In a duplicatingmachine, a gelatinous sheet, a slidably mounted carriage, and paperstripping means mounted on the carriage adjacent the sheet. V

This specification signed this 26th day of June, 1930.

sheet, a support for the sheet, a slidably RICHARD P. PHIBBS.

